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No solution has appeared by March 7, 2026. Thank you.
Outlook on Mac not syncing anymore since Jan 21 2026 Outlook update
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Jean-François Lévesque
10
Reputation points
After a recent automatic update to New Outlook for Mac, Outlook is no longer working reliably. I’m seeing sync issues where emails stored in folders no longer appear, and sent messages remain stuck in the Outbox even though they also show up in Sent Items. The same account works correctly in Apple Mail, Outlook Web, and on mobile. I’ve also tried removing and re-adding the account, without success. Reverting to Legacy Outlook fixes everything. Are there any known workarounds to use the new Outlook reliably, and is there an ETA for a fix?
Outlook | MacOS | New Outlook for Mac | For home
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Q&A Assist2026-01-27T00:41:53.82+00:00 AI generated content. This question contains an answer created with AI from Q&A Assist. Learn moreCurrently, there are no specific workarounds or fixes mentioned in the provided context for the sync issues you're experiencing with the New Outlook for Mac following the January 21, 2026 update. Since you mentioned that reverting to Legacy Outlook resolves the issues, it may be advisable to continue using the legacy version until a fix is released.
For further assistance, you may want to keep an eye on updates from Microsoft regarding the New Outlook for Mac or check their support channels for any announcements regarding fixes for these sync issues.
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